Poetry Through the Ages is an excellent site that offers clear and concise explanations of different poetic forms, a general history of poetry and a simple guide to reading and appreciating difficult poems.
“When a poem arises, it feels like the bosom of the poet lifts up and births the spoken or written moment. The point of origin lies at the furthest depths of the poet, often calling into play ancestral memories, divine or universal inspiration, and insights or truths that “magically” resonate with the reader.”